An infusion of norepinephrine is ordered at 0.25 mg/hr. The drug concentration is 1 mg in 100 mL. What is the mL/hr to deliver the dose?

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Multiple Choice

An infusion of norepinephrine is ordered at 0.25 mg/hr. The drug concentration is 1 mg in 100 mL. What is the mL/hr to deliver the dose?

Explanation:
When you have a drug dose rate in mg per hour and a solution concentration, convert the concentration to mg per milliliter and then find how many milliliters deliver the required milligrams each hour. The solution has 1 mg in 100 mL, which is 0.01 mg per mL. To provide 0.25 mg per hour, you need 0.25 mg ÷ 0.01 mg/mL = 25 mL per hour. So the infusion should run at 25 mL/hr.

When you have a drug dose rate in mg per hour and a solution concentration, convert the concentration to mg per milliliter and then find how many milliliters deliver the required milligrams each hour.

The solution has 1 mg in 100 mL, which is 0.01 mg per mL. To provide 0.25 mg per hour, you need 0.25 mg ÷ 0.01 mg/mL = 25 mL per hour. So the infusion should run at 25 mL/hr.

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